This quiz titled '2A672 Volume 2 URE Part 2' assesses technical knowledge of the ACE802S air conditioner, focusing on system components, operation, and troubleshooting. It is designed for Air Force personnel specializing in equipment maintenance, enhancing skills critical for operational readiness and safety.
Compressor and expansion valve
Condenser and expansion valve
Compressor and condenser
Condenser and evaporator
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Defrost
Heat boost
Vapor injection
Liquid injection
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Air shutoff
Fuel shutoff
Coolant control
Refrigerant control
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Perform a service inspection
Perform an operational check
Verify the problem actually exists
Recognize the write-up as a malfunction
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12 VDC
120 VAC
Hydraulic motor
Diesel engine only
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Burner control unit (BCU) uses outlet air sensors to compare air temperature with programmed value, cycling the fuel burner on and off to maintain temperature
Heater control unit (HCU) uses outlet air sensors to compare air temperature with programmed value, cycling the fuel burner on and off to maintain temperature
A photocell monitors combustion and activates the BCU to cycle the fuel burner on and off to maintain temperature
An electronic thermostat cycles the main air fan on and off to maintain temperature
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Fuel pressure
Air/fuel ratio
Igniter timing
Fuel spray pattern
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The photocell's thermal contacts open when heat increases
The photocell's thermal contacts close when heat increases
The photocell's resistance decreases in the presence of light
The photocell's resistance increases in the presence of light
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Charge coil
Alternator G1
Ignition switch
Charge regulator
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Air in the system
Fill relief valve set too low
Thermal relief valve set too high
Overserviced hydraulic reservoir
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Relieve pressure from the system
Force fluid to flow into the reservoir
Bypass fluid around the gear-type boost pump
Force fluid to flow into the low-pressure system
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Heat exchanger
Temperature switch
Thermal relief valve
Low-pressure check/relief valve
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Fill-and-bleed the system
Adjust the thermal relief valve
Open the heat exchanger bypass valve
Close the heat exchanger bypass valve
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High-pressure pump volume control
High-pressure relief valve
Thermal relief valve
Bypass valve
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Bypass valve
System selector valve
High-pressure relief valve
Heat exchanger bypass valve
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Water level switch
Oil pressure switch
Fuel level indicator
Fuel pressure switch
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Fill switch, LS4
Micro switch, FS1
Engine master switch
Soft start relay switch
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162 psi
152 psi
142 psi
132 psi
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775 psi
1,500 psi
1,800 psi
2,000 psi
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Longitudinal valve
Tilt control valve
Latitudinal valve
Azimuth valve
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Shifter solenoid is energized
Neutral switch S2 is still open
Shifter solenoid is de-energized
Directional lever is out of adjustment
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Tilt cylinder leak
Azimuth cylinder leak
Latitudinal cylinder leak
Longitudinal cylinder leak
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System pump failure
Overcenter valves out of adjustment
Counterbalance valve out of adjustment
Lift arm cylinder relief valve out of adjustment
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Tilt movement
Yaw movement
Lateral movement
Longitudinal movement
10 amp fuse
20 amp fuse
Low oil pressure
Neutral start switch S3 is closed
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Orifice fitting
Scissor assembly
Pressure switches
Two-stage lift cylinders
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Lift cylinders
Pressure switch
Sensor rail switch
Lower scissor wheel travel limit switch
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Battery power operates the electric down valves
Auxiliary power operates the electric down valves
Accumulator pressure operates the down pilot check valve
The weight of the platform and scissor assembly controls descent rate
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RUN
MODE
START
DRIVE
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Corroded battery cables
A defective control cable
Main disconnect switch ON
Engine switch in RUN position
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Powers the booster compressor
Provides air to the feed air compressor
Provides low pressure air for pneumatic tools
Maintains 130 degreees F air temperature to prevent condensation
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ASM1, ASM2
CYL1, CYL2
FCV1, FCV2
PS1, TS4, TS5
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Alternator output
Oil pressure switch
Ignition switch released
Centrifugal switch opens
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Engine
End of stroke limit switch
Programmable logic controller circuit
Directional control valve cycling control relay
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Terminal 1
Terminal 3
Terminal 4
Terminal 6
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2426
623
457
55
AFTO Form 375
AF Form 457
AF Form 455
AF Form 55
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Supervisor
Installation commander
Uniform repair/replacement board
Item manager and equipment specialist
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MAJCOM HQ
The item manager
The equipment specialist
The uniform repair/replacement board
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Quiz Review Timeline (Updated): Mar 21, 2023 +
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